Spray device



NOV. 17, 1931- J. H. MONTGOMERY 1,832,570

SPRAY DEVICE Filed sept. 2e. 1927 atenteol ov. 17,. 1931 .iazsio JAMESn.

MONTGOMERY, F LOS ANGELESVCALIFORNlA.

SPRAY DEVICE Application This application relates to improvements inspray devices, and is more particularly 1ntended for portable devices ofsmall size.

A particular feature of this invention 1s the fact that the spray devicepresented maybe initially charged with air or other gas to produce apneumatic pressure which is main-A tained thereafter until operation ofthe de-v vice. It is therefore possible to charge the l0 spray deviceand then carry it to a distant point without a continuing or furtherconnection with the source of compressedgas.

Another feature of the invention is the provision of a spray head whichmay be seated upon any of a number of special containers for operationwith any of them, thus reducing the cost of employing the device, andmaking it possible to use the device suc` cessively with differentmaterials, as for eX- ample in spraying paints, where diferent colorsare to be used one after another.

A further feature of thedevice is the employment of valves formaintaining the pneumatic lpressure within the container until a sprayis to be produced, and so constructing and arranging the spray nozzleitself that by a movement thereof a valve is actuated to permit thedelivery of the contents of the container through the nozzle.

Other objects will appear in the. course of the following specilicationand claim in co'njunction with the accompanying drawings which set forthseveral modifications and constructions under the presentinvention.

ln these drawings:

Figure 1 is a diametral section through a spray deviceaccording to thepresent invention.

Fig. 2 is a similar section through a modified form of device. v

Fig. 3 is a similar section through a second modiiied form of thedevice.

In these drawings, a container 10 is provided having the usual body andan end 1 1 terminating in an upstanding threaded neck 12 in theparticular illustration. -t will be seen that such containers may becheaply and easily formed, and are already on the market for dispensingpaints, oils, etc. vIt

50 is particularly to .be noted that such containmed september 2e, 1927.serial No. 221,954.

ers are now sold by many companies, and hence it is possible to providethe spray head 13 as a separate article adapted for use with suchcontainers.

The spray head 13 of Fig. 1 comprises a lmetal body having a downwardlyextending skirt 14, threaded internally to receive the threads on thecontainer neck 12. It will be understood that an appropriate type ofpacking 15 may be employed to prevent escape of air betweenthe containerand the spray head. The spray head 13 likewise .has an upstanding boss16. A passage 17 of large diameter is formed in the spray head bodyproper and in the boss 16 to receive a valve closing 55 spring 18. Atits upper end, the passage 17 is reduced in size and receives a tube 19which extends beyond the boss 16 and constitutes an air connectionnipple 2O by which the device may be connected to the air hose of an 7air pump or general supply system for compressed air.

A bushing 21 is threaded at its upper end for engagement with internalscrew threads at the lower end of the passage 17, and has its bottomarranged to receive the closing disk'22 of a valve. This disk has acentral aperture to rece-ive the wire end 23 of the valve closing spring18, this spring being of coil type and supported by the upper end 8 ofthe bushing 21.

A second passage 24E through the spray head 13 receives the duct 25which terminates in an angularly bent nozzle 26. The lower end of theduct is received within a bushing 27 which is likewise in threadedengagement in the spray head 13. This bushing hasa lateral aperture 28adapted to come into registry with a` lateral aperture 29 of the duct25. An enlarged end 30 onthe duct 90 prevents it from being blown out ofthe spray head by the pneumatic pressure within the container 10. y

In operation, having given a container 10 charged with paint or othermaterial to be sprayed, the usual closing cap is removed, and the sprayhead 13 is threaded down until it forms a seal with the container. Anair hose is then connected to the nipple 2O and compressed air admitteduntil thecontents 0 of the container 10 are placed under an initialpressure of predetermined degree. As the air enters through the tube 19,it passes into the passage 17 and by forcing the valve 22 downward, itnds entry into the container 10 itself.

The container and spray head may now be disconnected from the air hoseand carried to the point of use. On arriving at the point of use, theoperator inverts the container and turns the nozzle 26 until the lateralaperture 29 of the tube 25 is brought into registry with the aperture 28of the bushing 27. The pneumatic pressure within the container nowpushes the liquid downward through these apertures and the duct 25 anddistributes it under predetermined pressure through the nozzle 26, andthe operator may direct the stream in any direction by a suitabletilting and movement of the container.

In the modified form of Fig. 2, the container is provided with the top11 and neck 12 as before, and the spray head 13 has the threaded skirt14. In this construction, however, a bushing 16a is threadedly mountedin the head 13. This bushing has an enlarged cavity 35 at its lower endopposite a small aperture 36 in the head 13. Upwardly extending from thecavity 35 is a conduit 37. A nut 38 is threadedly mounted on the upperend of the bushing 16a and may be adjusted axially with respect to thebushing by this threaded engagement.

This nut 38 has the threads 39 at its top to receive the sleeve of anair hose; and the bushing is further provided with a conduit 40 having alaterally bent discharge end 41. The nut 38 also supports and is iixedlyconnected to a tube 42 which forms a substantially close but sliding fitin the conduit 37, and has a beveled lower end.

The charging of this modified form is accomplished as with the firstform, the air being admitted through the passages 41, 40

' and the tube 42 into the conduit 37 where it displaces the ball 43downward from its seat against the shoulder or bushing 16a, and permitsthe air to pass into the container 10. When the air pressure within thecontainer is greater than that outside of the container, the blast ofair through the aperture 38 and the pressure resulting causes the ball43 to be moved to seal its seat.

When it is desired to use this modified form, it is inverted and the nut38 is screwed upwardly until the beveled end of the tube 42 pushes theball 43 from its seat, so that the material in the container may nowescape therefrom through the aperture 36, around the ball 43 and throughthe tube 42, to be finally discharged from the opening 41.

In the modified form of Fig. 3, the container 10 has its cover 11 andneck 12 as before, and the head 13 has its threaded skirt 14. In thisform the upwardly extending boss 166 of the head 13 is threaded on theexterior tov receive a nut 38a. The passage 37a through the head 13terminates at its bottom in a small aperture 36a opening to the interiorof the container 10. The nut 38a has threads 39 as before for connectionto a source of compressed air: and has an internal conduit 40terminating in a reducing nozzle opening 41. The nut 38 in this modifiedform supports a valve pin 45 which has a conical lower end 46 to beseated at the shoulder 47 of the head 13 to close the same. This valvepin 45 is carried fixedly in the nut 38, but is provided at its upperend with a notch or kerf 46a by which the air or liquid may pass fromthe conduit 37a into the conduit 40.

The operation of this device resembles that of the preceding one, exceptthat in this case the air pressure is maintained in the container 10 byscrewing the nut 38a downward until the valve closure member 46 isseated on the shoulder 47. When it is desired to employ the spray, it issubstantially inverted, and the nut 38 backed oil' until a suicientcross-section of ilow is established from the container 10.

It will be understood that with this modification a nozzle head 48 maybe screwed onto the threads 39 for the hose connection, to assist in thedelivery of a sheet of liquid from the device.

It is obvious that the invention is not limited solely to the forms ofexecution shown, but that it may be modified within the scope of theappended claim.

What is claimed as new is:

In a spray device, a spray head having means for attachment to acontainer about a discharge opening therein and also having anexternally threaded portion and' a conduit therethrough terminatingadjacent the container in an orifice of less diameter, a manuallyoperable lconnection member having means thereon engaging the threads ofsaid threaded portion so that upon rotation it is moved axially withrespect to said conduit, said connection member having a passagetherethrough in alignment with and of less diameter than said conduit, avalve pin of a uniform diameter less than said conduit and disposed inthe latter and having one end formed and disposed to cooperate with saidorifice to open and close the same and having its other end fixedlydisposed in the end of the passage in said connection member, wherebythe pin is axially moved in the conduit with the rotative movement ofsaid member, the end portion of said pin extending in said passage beingcut away to establish communication between the passage and saidconduit, and said connection member having means for connection with afitting.

In testimony whereof, I atlix my signature.

JAMES H. MONTGOMERY.

